218 



showing distinct hastate to pinnatitid outline (pustulose under 

 high magnifying power); one slit. Inside colour creamy-white to 

 deep-pink. 



Girdle. — Cream to deep-rose-pink, leathery, and encroaching 

 on the hutures, destitute of tufts, covered with minute hairs. 



Measurernents. — Length, 10 mm. ; breadth, 4 mm. 



Habitat. — Dredged by Dr. Verco in St. Vincent's Grulf, South 

 Australia, and taken at Aldinga Rocks by Dr. Torr. 



Remarks.— T\\\i^ species is allied to A. scutiger of Reeve ; his 

 description is very incomplete. The girdle in A. Verconis is smooth 

 and not densely bristled as in scAitiger. 



5. Aeanthoehites Maughani, n. sp. Pi. 7, fig. 5. 



General Appearance. — Shell elongated oblong, carinated, side 

 slope curved. Colour light-brown, with patches of yellowish- 

 brown. 



Anterior Valves. — Covered with concentric rows of pustules, 

 large at base, and growing smaller towards apex. 



Posterior Valve. — Mucro slightly post-median. Five concentric 

 rows of pustules. 



Median Valves. — Lateral and pleural areas, except that the 

 former is yellower; both areas ornamented with six slightly 

 radiating longitudinal rows of exceptionally elongated tubercles, 

 inclined diagonally acutely backwards, touching the tegmentum 

 almost the whole length, giving the appearance of riblets serrated 

 on one side. Some tubercles are much bent over at the tip. 

 Tubercles rough with microscopical granules. 



Dorsal Area. — Linear raised granulose, intermittently covered 

 with blackish specks. Longitudinally and transversely striate 

 under the microscjpe. Apex of sixth valve black. 



Girdle. — Light-brown, little darker than valves ; leathery, 

 loosely clothed with minute scales. Sutural tufts of short 

 brownish spicules, and four tufts on anterior valve. 



Measurement. — Length, 8 mm.; breadth, 4 mm. — dried speci- 

 mens. 



Habitat. — Port Victor, S. Australia ; discovered by M. M. 

 Maughan, Esq. Aldinga, by Kimber. 



Remarks. — Easily distinguished from its allies by its narrow 

 raised and granulose dorsal area and its exceedingly elongated 

 appressed tubercles. 



6. Aeanthoehites exilis, n. sp. Pi. 7, <ig. 6. 

 General Appearance. — Colour porcelain-white, slightly mottled 

 with very pale-brown. Dorsal area on third valve bright-red, 

 oblong, rather broad, strongly carinated, side slope straight, 

 beaked, 



